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All Single Wall and Double Wall Tanks - SECTION A TESTING DOUBLE-WALL TANKS Step 3 HYDROSTATICALLY MONITORED Pressurize primary tank to 5 psi maximum. (WITH LIQUID FILLED ANNULAR SPACE) DO NOT This tank has a hydrostatic monitoring system that in- • Attach air pressure line to any annular space fitting. cludes a nontoxic colored monitoring fluid (30% calcium chloride)between the tank walls. In the unlikely event of a tank leak, this monitoring fluid will leave a colored trace on the tank. Do not lift tank with pressure on it. This could re- Reservoir Level Check: sult in personal injury. DO VISUAL AIR/SOAP TEST • Remove the 4"plug from the reservoir fitting. Step 1 • Inspect for monitoring tracer fluid. Apply a soapy water solution to all fittings and manways. • See Section C1 and C3. Step 2 • If reservoir is completely empty,immediately call Con- Check for leaks as indicated by bubbles. tainment Solutions Field Service. Step 3 Outer Wall Test If bubbles are present, tighten the plugs or bolts and retest. INSPECTION INNER WALL TEST Step 1 Step 1 Closely inspect outer wall for any trace of colored moni- Release pressure from primary tank. toring tracer fluid. NOTE: If a colored fluid is found on the tank surface Step 2 during any test,discontinue the installation and imme Remove enough tank fittings to see inside primary tank. diately contact Containment Solutions Field Service. Step 3 BOTTOM INSPECTION With a light, look inside for any accumulation of moni- toring tracer fluid. Step 1 NOTE: If a colored fluid is found on the tank surface Tighten all fitting plugs to the annular space and res- during any test, discontinue the installation and im- ervoir to avoid spilling monitoring fluid. mediately contact Containment Solutions Field Ser- Step 2 vice. Inspect tank bottom by lifting tank using all lift lugs Step 4 provided on the tank. Replace and tighten fitting plug(s). ® Step 5 Loosen plug to vent annular space. Do not stand under tank while tank is in the air. A4. HOLE SIZE Injury or death could occur. NOTE: If tanks are mechanically anchored, additional Step 3 minimum clearance is required between tanks(see sec- After completing inspection of tank bottom, replace tion A7). tank on shipping pads or on smooth ground. STABLE EXCAVATIONS (FIGURE 5) DO NOT ♦ Rotate tank. A 8•Minimum PRESSURIZE TANK 4'Preferred Step 1 A A A A Connect air compressor line to primary tank fitting. Ste 2 24R ul P on 17 an A contractor supplied pressure relief valve must be connected to the primary tank for additional pro- %A ,A A tection. The relief valve should be sized and set to r prevent the tank from being pressurized in excess of the maximum allowed test pressure. CONTINUEDO PAGEe 7